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is my tach wrong?

This is a discussion on is my tach wrong? within the General Help forums, part of the LSx Technical Help Section category; I have a 2000 ta and when it gets to normal temp the tach reads around 400rpms. Although it seems ...

  1. #1
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    is my tach wrong?

    I have a 2000 ta and when it gets to normal temp the tach reads around 400rpms. Although it seems like the engine is around 7to800rpm. Stays the same through the rpm range it all seems too low for the sound. For example I can run 5th gear at 1k rpms and no bogging

  2. #2
    Member Pitchlock's Avatar
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    Need more info. 1k in 5th wont bog the engine down. What speed are you going in 5th at 1k rpm? But 400 rpm is low.
    99 Z28
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  3. #3
    Senior Member greatwhiteZ28's Avatar
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    white
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    stock guage tend to be off and not accurate FYI

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    Member Bouvers's Avatar
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    Blue 1997 Trans Am(Sold)
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    I second those responses, stock tachs are off by a bit, you should get a shift light. What gears do you have in your car, I'll check to see what speed I'm doing in my TA at 1000rpm's in 5th and we'll see how far off they are if at all that should give you an answer if your gauge is way out or not.

  5. #5
    They peed on my rug
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    according to my hp tuners gauges my factory tach is way off. anywhere from 250 rpm at idle to 500 at 6000 rpm but mines off the other way at 6500 on the tach im only turning 6000

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    Ugly but well hung, A-10 SS#1531's Avatar
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    1998 Camaro SS M6 Hardtop

    My tach is off too, it reads 300 rpm too high at idle. I think it stays about the same amount off at high rpm's too. Anyone know of a fix for this? Other than buying an aftermarket one.

  7. #7
    Senior Member greatwhiteZ28's Avatar
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    really easy fix. just remove everything to the cluster like your going to install some wht face guages and pull the tach needle off and set it back like 3mm-6mm ( depends how far its off). leave cluster lens off while doing this soo you can make adjustements to the needle.

    note---- there is a special needle popper for this that comes with 1pc guage kits but with a flipped flat head with a notch in the middle will do just fine or even better

  8. #8
    Member Bouvers's Avatar
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    that is one thing you can do but I think the best thing a guy should do is install a shift light

  9. #9
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    hey guys thanks for the info on this, sorry i haven't responded. Ive had computer trouble for a while. I'm not too worried about the problem, just wondering if I was the only one.

  10. #10
    Senior Member greatwhiteZ28's Avatar
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    white
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    no problem any thing else glad to help, and yes all of ours tach are off.

  11. #11
    Member Bouvers's Avatar
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    Blue 1997 Trans Am(Sold)
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    lol ya I would be curious to see just how far off my tach is... awell I guess I just have to take my own advice and buy a shift light.

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